<?php
/**
 * Smarty plugin
 * @package Smarty
 * @subpackage plugins
 */


/**
 * Smarty truncate modifier plugin
 *
 * Type:     modifier<br>
 * Name:     truncate<br>
 * Purpose:  Truncate a string to a certain length if necessary,
 *           optionally splitting in the middle of a word, and
 *           appending the $etc string or inserting $etc into the middle.
 * @link http://smarty.php.net/manual/en/language.modifier.truncate.php
 *          truncate (Smarty online manual)
 * @author   Monte Ohrt <monte at ohrt dot com>
 * @param string
 * @param integer
 * @param string
 * @param boolean
 * @param boolean
 * @return string
 */
function smarty_modifier_cutstr($string, $length = 80, $dot = '..')
{
	if (strlen($string) <= $length) {
		return $string;
	}
	$string = str_replace(array('&amp;', '&quot;', '&lt;', '&gt;'), array('&', '"', '<', '>'), $string);
	$strcut = '';
	$n = $tn = $noc = 0;
	while($n < strlen($string)) {
		$t = ord($string[$n]);
		if ($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {
			$tn = 1; $n++; $noc++;
		} elseif (194 <= $t && $t <= 223) {
			$tn = 2; $n += 2; $noc += 2;
		} elseif (224 <= $t && $t < 239) {
			$tn = 3; $n += 3; $noc += 2;
		} elseif (240 <= $t && $t <= 247) {
			$tn = 4; $n += 4; $noc += 2;
		} elseif (248 <= $t && $t <= 251) {
			$tn = 5; $n += 5; $noc += 2;
		} elseif ($t == 252 || $t == 253) {
			$tn = 6; $n += 6; $noc += 2;
		} else {
			$n++;
		}
		if ($noc >= $length) {
			break;
		}
	}
	if ($noc > $length) {
		$n -= $tn;
	}
	$strcut = substr($string, 0, $n);
	return $strcut.$dot;
}

/* vim: set expandtab: */

?>
